Electric switch.



F. BARR.

ELEGTRIU SWITGH. 'APPLIOATIOH FILED JULY 1, 1912.

1,049.9'7'7. v Patented Jan.7,1913.

2 SHEETSSHEET 1.

WITNESSES: INVENTOR l; M fi qa 'zm'c flan" "ou use snares PATENT. @iiltlbh.

FREDERIC BARR, OF NEW YORK, 131'. Y.

ELECTRIC SWITCH.

Specification of Letters Patent.

Patented Jan. '3', 1913;

Application filed July 1, 1912. Serial No. 706,856.

To aZZ whom it may concern:

Be it known that I, Fnnonuic BARR, a

and reliable construction which can be made rear View.

economically.

The HIYQHUOD in its preferred form consists of an insulating base formedfrom asingle piece of suitable material such as percelain and having spring switch contacts and a rotating switch cam on one side together with circuit terminals all constructed, supported and spacedapart from each other so as to require a minimum number of parts which can be readily assembled and which are properly insulated from each other. The block and the parts are so designed that the block can be made from the expense without sacrificing features strength and insulation necessary to devlces of this character. 1

Figure 1, is a front Vi8W of a lamp socket switch embodying the improvements of my invention and showing the switch contacts and the rotary snap switch cam, F 1g. 2 is a Figi'd, isa horizontal sectional view of the insulating block on the plane of the line Y Y of Fig. 1. Fig. 5, is a perspective view of the upper switch contact and circuit terminal. Fig. 6; is a perspective View of the lower contact and the center lamp contact.

Fig. 7, is a plan View of the socket. Fig. 8, 1s a side view and partial section on the plane of the line Z Z of Fig. '7. Fig. 9, is

a view of'the under side or lamp end of the insulating block. Fig. 10,-is a front perspective view of the insulating block. Fig. 11 is a rear perspective view of the insulating block.

The two switch contacts 1 and 2 are formed of resilient sheet metal and are adapted to gbe connected by the rotatable metallic cam 3. Each of the switch contacts is in the form of a U-shaped arm. The Contact arm 1 has abase l formed at right 3, is a vertical sectional view on the plane of the line X X of Fig. 1.

angles to the immediately connected part and the switch block has a recess shaped to-receive and position it. The circuit terminal plate 6 fits in oneend of the recess 5 and overlaps the base l. The clamping screw 7 passes through the hole 8 in the insulating block and screws into the terminal plate 6 so as to hold the terminal plate and the ontact arm 1 securely in position.

A passage?) is left leading to the bindingscrew 10 for convenience in securing oneof the circuit wires. The upper switch contact and the circuit terminal are surrounded on three sides by the insulating walls or flanges 11, 12 and 13 for the purpose of pro- The lower switch contact 2 is.

tection. formed from resilient sheet metal and has a base 15 extending laterally and adapted to be secured to 'the insulating block by means of a screw 16 and nut 17, the flange 18 of the insulating block having a hole 19 for the screw shank. The center lamp contact 20 is secured to the insulating block by the same screw 16. The circuit terminal 22 is located in the recess 23 in the back of the insulatingbase and has a foot 24 bent over at right angles and secured to they flange 25 of the insulating block by a screw 26.which passes through a hole 27. This same screw 28 to the insulatingblock. A passage 29 leads to the clrcuit terminal 22 for convenience for securing one of the circuit wires by means of the binding screw 30.

"For more securely fastening the screwthreaded lamp socket 2'8 to the insulating block I prefer to provide a Screw 32 passing through a hole 33 in the flange 18 and a nut 34/ A projecting rib 35 integral with the flange '18 serves not only to assist in posi tioning the nut. 3d, the base 15 of the lower switch contact and the nut 17 but it also insulates the metallic parts connected to the lamp terminals. The bottom of the switch block is also preferably provided with an integral raised boss 36 and ribs 37, 37 for positioning and insulating the two lamp terminals. The flanges or walls 40 and .41 laterally protect the lower switch contact and adjacent parts and prevent short circuiting. The wall or flange 42 spaces apart the circuit terminal 6 and the screw 32 which is connected to the outer lamp terminal and which are of diiicrent polarity. The wall or flange 43 spaces apart the U-shaped portions of the resilient switch contacts. The

(1, 7 7) ii :11? (alive ZHUVBEIOYH, p iii'ziimi. The 25; :i iizhuhii' hashing M;

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1 (he parts in Their 1'01: 1; it is Pl'OViCiQCi for hi: iiiiimface of ii 15 -iii%,i2iiiiiiliif huh with (he L 19 forked Wasimr may 1 Iii-(ice from 011% side. The (i with a suitable ihumhuijillg ii. and Kim CUU S in The b}ii)(i.i(5 and 1H iichcd zipztiij ilfllli the circuit r 1211s of ihu iiwiiiut'ing i'hmfgn i223 hi ing ihii makes it cum to miimi the gi l-hm 001 ihiz HpU'HiiQ h exmain body 55 m. the 111- ihe flanges 1i Wlii he 5 is) the main h r i('/ make. 1.1

msiiia 7 mini. wniis ii-i:-

Yhc hi (Lil Fvmi i I'Uii'iilii) :QHiV smith (1 (2111'- spring sivii'ah 1 being coi'neci'eci to the mimi- SWliUil (fOj'iitiCt.. f he other circuit l-Ql'h'i i heiiip' connected to ihe ()i'ilQl' lamp Contact, said insulating hiock 75 having in egi'al flanges pl'OjOC-ii] hickily iii-011i uh ,ces dm'cc i and serving to laierally surround Lha; switch wiihici's and the tei'ininziis rcspeciiveiy and rating i3: aii'ord positimiing means f0; the insulating block go in an ()iwlinmy socket sheii.

socket switch constnuiiimi (:Jmpris; ing an insulating block having flanges pro jocting suhshinfiaiiy at right angles from 031% face hereof and {mining ii chamber. open, at one :siue, spring switch cmitmi'i' meniii'cis 'ccm'cii (heroin, spiniilc aiip mriiml in a l'i'z'msve ie hols in Silili insulating block and a1 s'wiich cam Cilllicd h Said spindle and adapted 50 hc 170 (ml hciwa iii said swiwh. (C(Pili'fl'i Arnie fine of said army; 501w M in huhl 1h 2 switch mun loosely in the open circuit, pumi'ion.

and

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Cir

noeeew contacts, a lamp terminal connected to the other switch contact, a second circuit terminal and a second lamp terminal electrically connected thereto.

7. 1 socket switch construction comprisin an insulating block having upper and lower flanges, side flanges and an intermediate flange all projecting from one face of said block, U-shaoed spring switch contacts secured to said block and having portions spaced apart by said intermediate flange, a spindle extending transversely through said block and a switch cam carried-by said spindle for connecting said switch contacts.

8. A socket switch construction comprising an insulating block having upper and lower flanges, side flanges and an intermediate flange all projecting from one face of said block, U-shaped spring switch contacts secured to said block and having portions spaced apart by said intermediate flange, a spindle extending transversely through said block, a switch cam carried by said spindle for connecting said switch contacts, a circuit terminal mounted in a recess in the face of said block and a screw passing through said block from the opposite side and securing said circuit terminal and one ofsaid switch contacts to said block.

9. In a switch socket construction, an insulating block having a base flange projecting from one side thereof, a spring switch member having a laterally extending base, a central insulating boss and pr jecting ribs carried by the outer face of the insulating block, an outer lamp terminal positioned by" said boss and said ribs, a center lamp terminal positioned by said ribs, screws passing through said lamp terminals and through the base flange of said insulating block and nuts for said screws, said insulating block having an insulating rib on its upper face spacing said nuts apart.

10. A switch socket construction comprising an insulating block having recesses facing in opposite directions, circuit terminals located in said recesses, a switch contact secured beneath one of said circuit terminals, a lamp terminal at the end of said block secured to the other circuit terminal, a screw and nut affording additional means for securing said lamp terminal to said insulating intermediate flanges allprojecting from one face of said block and leaving recesses for switch contacts and a switch cam, said block having a recess on its opposite face for a circuit terminal and a projecting flange for spacing the circuit terminal from the switch spindle. l

13. As an article of manufacture, an insulating block for an electric switch having upper and lower flanges, side flanges and intermediate flanges all projecting from one face of said block and leaving recesses for switch contacts and a switch cam, the lower flange of said insulating block having a rib projecting toward one of the intermediate flanges and serving to position a switch contact.

14:. As an article of manufacture, an insulating block for an electric switch having upper and lower flanges, side flanges and intermediate flanges all projecting from one face of said block and leaving recesses for switch contacts and a switch cam, said base flange having acentral boss and ribs projccting from its outer face, all of said ribs and flanges being substantially parallel.

15. A socket switch construction compris ing an insulating block having a transverse passage, a bushing secured in said passage, a spindle supported in said bushing and having a grooved end, a split washer on the end of said spindle, said block having a wall in the plane of said groove, switch contacts mounted at the opposite side of said block and a cam carried by said spindle for connecting said contacts.

FREDERIC BARR.

Witnesses:

Roar. S. ALLYN, E. BRADFORD. 

